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GCL-NT12R/48BGDF-445 vs NT12R/54BGDF-495W 11 of 19 identical Swap Change panels

GCL GCL-NT12R/48BGDF-445 vs GCL NT12R/54BGDF-495W

GCL-NT12R/48BGDF-445
445 Wp 22.27 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
NT12R/54BGDF-495W
495 Wp 22.25 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

8 differences, and they point both ways

The largest is rated power: 50 W more power. 11 of 19 comparable parameters are identical.

See all 8 differences
How alike are they
11 of 19 comparable
parameters are identical
identical differs
01

What actually differs

8 of 19 parameters
Parameter GCL-NT12R/48BGDF-445 NT12R/54BGDF-495W Difference
Rated power 445 Wp 495 Wp 50 W more power
Weight 21.5 kg 27.3 kg 5.8 kg lighter
Weight per kWp 48.3 kg/kWp 55.2 kg/kWp 6.8 kg/kWp lighter
Open-circuit voltage 35.68 V 40.03 V 4.35 V apart
Module area 1.998 m² 2.225 m² 0.227 m² apart
Cell count 96 108 12 cells apart
Voltage at max power 30.15 V 33.63 V 3.48 V apart
Dimensions 1762x1134x30 mm 1962x1134x30 mm 1762x1134x30 mm vs 1962x1134x30 mm
02

What it means on a roof

Thirty years of production
Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
GCL-NT12R/48BGDF-445
14,931 kWh
NT12R/54BGDF-495W
16,608 kWh
Lifetime gap
1,677 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario GCL-NT12R/48BGDF-445 NT12R/54BGDF-495W
Standard test conditions 25 °C 100.0% of rated power 445 W 495 W
Cool, bright day 40 °C 95.7% of rated power 426 W 473 W
Typical summer roof 55 °C 91.3% of rated power 406 W 452 W
Hot roof 70 °C 87.0% of rated power 387 W 430 W
03

Full specification

Parameter GCL-NT12R/48BGDF-445 NT12R/54BGDF-495W Difference
Power and efficiency
Rated power 445 Wp 495 Wp +50 W for NT12R/54BGDF-495W
Module efficiency 22.27 % 22.25 % Effectively the same
Power density 222.7 Wp/m² 222.5 Wp/m² Effectively the same
Open-circuit voltage 35.68 V 40.03 V 4.35 V apart
Voltage at max power 30.15 V 33.63 V 3.48 V apart
Short-circuit current 15.50 A 15.40 A Effectively the same
Current at max power 14.76 A 14.72 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1762x1134x30 mm 1962x1134x30 mm 1762x1134x30 mm vs 1962x1134x30 mm
Module area 1.998 m² 2.225 m² 0.227 m² apart
Weight 21.5 kg 27.3 kg -5.8 kg for GCL-NT12R/48BGDF-445
Weight per kWp 48.3 kg/kWp 55.2 kg/kWp -6.8 kg/kWp for GCL-NT12R/48BGDF-445
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 96 108 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#5,481 vs #5,689
GCL-NT12R/48BGDF-445 leads by 208 places
Power density
#5,302 vs #5,700
GCL-NT12R/48BGDF-445 leads by 398 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#2,192 vs #9,577
GCL-NT12R/48BGDF-445 leads by 7,385 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#9,381 vs #7,835
NT12R/54BGDF-495W leads by 1,546 places
05

More useful comparisons

Open the full database
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GCL GCL-NT12R/48BGDF-445 vs GCL NT12R/54BGDF-520W
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GCL GCL-NT12R/48BGDF-445 vs GCL NT12R/54BGDF-515W
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GCL GCL-NT12R/48BGDF-445 vs GCL NT12R/54BGDF-510W
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GCL GCL-NT12R/48BGDF-445 vs GCL NT12R/54BGDF-505W
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GCL GCL-NT12R/48BGDF-445 vs GCL NT12R/54BGDF-500W
9 differences, the largest is rated power
Same series, other bin
GCL GCL-NT12R/48BGDF-445 vs GCL GCL-NT12R/48GDF
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06

Written summary

07

Questions about this pairing

Which panel is better: GCL GCL-NT12R/48BGDF-445 or GCL NT12R/54BGDF-495W?
According to our database: GCL GCL-NT12R/48BGDF-445 has higher module efficiency (22.27% vs 22.25%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of GCL GCL-NT12R/48BGDF-445 and GCL NT12R/54BGDF-495W?
GCL GCL-NT12R/48BGDF-445 has a module efficiency of 22.27%, while GCL NT12R/54BGDF-495 W is 22.25%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does GCL GCL-NT12R/48BGDF-445 use vs GCL NT12R/54BGDF-495W?
GCL GCL-NT12R/48BGDF-445 uses TOPCon cells; GCL NT12R/54BGDF-495 W uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.
What is the warranty on GCL GCL-NT12R/48BGDF-445 and GCL NT12R/54BGDF-495W?
GCL GCL-NT12R/48BGDF-445 has a 30 years power warranty; GCL NT12R/54BGDF-495 W has a 30 years power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80-87%). Product (materials) warranties are usually shorter.
Are GCL GCL-NT12R/48BGDF-445 and GCL NT12R/54BGDF-495W bifacial panels?
Both GCL GCL-NT12R/48BGDF-445 and GCL NT12R/54BGDF-495 W are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

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Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.